Properties of the Number 13609

Thirteen Thousand Six Hundred Nine

Basics

Value: 13608 → 13609 → 13610

Parity: odd

Prime: No

Previous Prime: 13597

Next Prime: 13613

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 31 × 439

Divisors: 1, 31, 439, 13609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010100101001

Octal: 32451

Duodecimal: 7A61

Hexadecimal: 3529

Square: 185204881

Square Root: 116.6576186967658

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Centered 36-gonal numbers. A195316

Numbers k > 1 such that k mod ord2(k) is even, where ord2(k) is the order of 2 mod k. A36260

a(n) = 42·n² + 1. A158604

a(n) = 12·n² - 8·n + 9. A167585

Triangle T(n,k), n>=0, 0<=k<=C(n,2), read by rows: T(n,k) = number of k-length chains in the poset of Dyck paths of semilength n ordered by inclusion. A193629

a(n) = ∑_y=1..n ∑_x=1..n floor((x^k + y^k)^1/k) with k = 2. A211791

Expansion of ψ(x³)³ / (ψ(x)² * ψ(x²)) in powers of·where ψ() is a Ramanujan θ function. A262157

a(n) = (2·5ⁿ-(4ⁿ-2ⁿ))/2. A83315

Number of zero-sum -n..n arrays of 4 elements with adjacent element differences also in -n..n. A202254

Numbers k such that k³ - b2 is a triangular number (A000217), where b2 is the largest square less than k³. A233401